CVE-2020-12049
dbus: denial of service via file descriptor leak
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
2Exploited in Wild
-Decision
Descriptions
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
Se detectó un problema en dbus versiones posteriores a 1.3.0 e incluyéndola y anteriores a 1.12.18. El DBusServer en libdbus, como es usado en dbus-daemon, filtra los descriptores de archivo cuando un mensaje excede el límite del descriptor de archivo por mensaje. Un atacante local con acceso al bus del sistema D-Bus o al socket AF_UNIX privado de otro servicio del sistema podría utilizar esto para hacer que el servicio del sistema alcance su límite del descriptor de archivos, negando el servicio a los clientes posteriores de D-Bus
An uncontrolled resource consumption vulnerability was discovered in D-Bus. The DBusServer leaks file descriptors when a message exceeds the per-message file descriptor limit. This flaw allows a local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket, to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients. As a result, the system may become unusable for other users, and some services may stop working. The highest threat from this vulnerability is to system availability.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-04-21 CVE Reserved
- 2020-06-08 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-400: Uncontrolled Resource Consumption
- CWE-404: Improper Resource Shutdown or Release
CAPEC
References (12)
URL | Tag | Source |
---|---|---|
http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html | ||
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30 | Third Party Advisory | |
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18 | Third Party Advisory | |
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16 | Third Party Advisory |
URL | Date | SRC |
---|---|---|
https://gitlab.freedesktop.org/dbus/dbus/-/issues/294 | 2024-08-04 | |
https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak | 2024-08-04 |
URL | Date | SRC |
---|---|---|
http://www.openwall.com/lists/oss-security/2020/06/04/3 | 2023-06-12 |
URL | Date | SRC |
---|---|---|
https://security.gentoo.org/glsa/202007-46 | 2023-06-12 | |
https://usn.ubuntu.com/4398-1 | 2023-06-12 | |
https://usn.ubuntu.com/4398-2 | 2023-06-12 | |
https://access.redhat.com/security/cve/CVE-2020-12049 | 2020-08-04 | |
https://bugzilla.redhat.com/show_bug.cgi?id=1849041 | 2020-08-04 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Freedesktop Search vendor "Freedesktop" | Dbus Search vendor "Freedesktop" for product "Dbus" | >= 1.3.0 < 1.12.18 Search vendor "Freedesktop" for product "Dbus" and version " >= 1.3.0 < 1.12.18" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 19.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.10" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
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